Bin Laden's son threatens revenge against US

The son of Usama bin Laden warned that Al Qaeda would take revenge against the U.S. for assassinating his father in 2011, according to audio released by the terror network's media arm.

The audio was heard in video released by As-Sahab on Saturday. Hamza bin Laden apparently told Americans that they were accountable for the decisions of their leaders.

He said Al Qaeda would continue waging jihad, or holy war, against the U.S. in response to its "oppressing" of Muslims, the Middle East Media Research Institute's Jihad and Terrorism Threat Monitor reported.

"If you think that your sinful crime that you committed in Abbottabad has passed without punishment, then you thought wrong," he says.

Usama Bin Laden was killed in a May 2011 U.S. raid at his compound in Abbottabad, Pakistan. His son's whereabouts is not known. Analysts speculate that he may be preparing to take over leadership of Al Qaeda.